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MCT - Marine & Offshore | RGSbtb
At sea Oil rigs Submarines Ships and vessels

Cable and pipe transits primarily used for applications in hazardous maritime and offshore environments where the possibility of fire, explosions, water penetration or other danger poses a real threat, and where the rapid access to emergency services is limited or non-existent.

RGSbtb

For twice the safety

RGSbtb is a double transit which is packed from both sides, enabling on site pressure testing of the penetration. Installations with this transit can be pressure tested from the space between the pack block units. They also conform to jet-fire rating.

Also available as:
E-series Ex rated
RGS BTB multi cable transit
Also available as:
E-series Ex rated

Correct and safe installations

To achieve the highest standard of safety, a cable or pipe transit must be installed correctly. As there are many different types of frame – which may be either welded, bolted or glued into position – and insert block, it is essential that installers known when to use the most appropriate installation method.

For more information, please view following instructions, videos or download manuals as PDFs.

MCT Brattberg system, horizontal installation
MCT Brattberg system, vertical installation

For more information visit Instructions and manuals

An RGSbtb transit can be used to protect cables from water penetration, combined with EMC protection. One side of the packing takes care of water penetration and the other side gives EMC protection.

The frame is 10 mm (0.39”) thick on the ends, 12 mm (0.47”) thick on the sides and it is 200 mm (7.87”) deep.

Standard frames come in eight sizes: 1, 2, 3, 4, 5, 6, 7, and 8. 
The internal width can be 60.5 ± 1 (Size 1,3,5,7) or 120.5 ± 1 (2,4,6,8).

Note that there can be limitations in type-approvals & certificates, making certain sizes inapplicable.

 

For size and weight please see tables in the MCT Online Catalogue:

MCT Catalogue

The system consists of a frame, rubber blocks and a compression unit. The frame is welded or bolted to a marine structure and packed with rubber blocks suited for each cable and pipe dimension. The compression unit is inserted to compress the rubber blocks against cables and pipes to establish a tight seal.

RGS Example
RGS Example
RGS Example
RGS Example
RGS Example
RGS Example

Performance

Working temperature
-65 to +70 °C
Water-tightness
6 Bar - Catastrophic pressure load
Gas-tightness
4 Bar - Catastrophic pressure load
Maritime resistance to fire
A0, A60, H0, H60, H120
Ingress protection
IP65, IP66, IP67, IP68, Nema 250 - type 3R, 4X, 12.
ABS
A class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
H class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
Jet Fire J60-J120 & JF
Lloyd´s Register
A class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
H class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
Jet Fire J60-J120 & JF
PIPE - H class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
PIPE - A class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
Assessment
DNV
A class fire
Gas tightness (catastrophic), Water tightness (catastrophic)
H class fire
Bureau Veritas
A class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
Letter
MED
A class fire, Gas tightness (catastrophic), Water tightness (catastrophic)
MCGA-UK Wheelmark
A class fire, Gas tightness (catastrophic), Water tightness (catastrophic)

For more information visit Certificates

System components

Stayplate

For increased stability

To be placed between each row of blocks.

See specs and variations  for Stayplate

STG Endpacking

For completing the seal

Installed between compression plate and the top of the frame.

See specs and variations  for STG Endpacking

PTG Presswedge

For completing the seal

Can be installed anywhere in the frame.

See specs and variations  for PTG Presswedge
Insertblock

Standard Block

For a fast and safe installation

Designed to seal cables and pipes with diameters from 3.5 – 110 mm (0.14-4.33”). Other dimensions can be supplied to order.

See specs and variations  for Standard Block

Handiblock

For great flexibility

Newly developed. Provides greater flexibility, simple and safe installation.

See specs and variations  for Handiblock

AddBlock

For varying cable dimensions

Available in eleven block sizes and 66 cable dimensions.

See specs and variations  for AddBlock
Spare Block

Spare block

For the option of fitting new cables in the future

Unused space in the frame is filled with solid spare blocks.

See specs and variations  for Spare block

U-block

For converting block dimensions

Used to enlarge the external dimensions of blocks to the next modular size.

See specs and variations  for U-block

Waveguides

For waveguides

Installed in a solid insert block. Available with a revolving core for increased flexibility.

See specs and variations  for Waveguides

Standard Trefoil block

For a fast and safe installation

Designed to seal three holes in one block.

See specs and variations  for Standard Trefoil block

Blanking Plate

Seals frame prior to block installation

Ingress protection IP65/66

See specs and variations  for Blanking Plate

Lubricant

MCT Brattberg Lubricant for easier and safer installation.

Shall be applied on all Lycron parts sealing surfaces when such demands exist

See specs and variations  for Lubricant

Packing Tool Large/Small

Compresses insert block to hold cable/pipes during partional installations.

Packing Tool L/S

See specs and variations  for Packing Tool Large/Small

STG Endpacking Puller

For re-entry into system

For re-entry into system

See specs and variations  for STG Endpacking Puller

Quick Release Spanner

For compression plate installation

For compression plate installation

See specs and variations  for Quick Release Spanner

Cable Separator

To aid installation of insert blocks

To aid installation of insert blocks by keeping away the interference of cables

See specs and variations  for Cable Separator

Spacer Tool

Simplifies insertion of last row of blocks

Spacer Tool

See specs and variations  for Spacer Tool

Block Selector

For cable and pipe measurement

For cable and pipe measurement. Insert blocks, add blocks and HandiBlocks.

See specs and variations  for Block Selector

Tweezers

Assist insertion of last block in each row

Assist insertion of last block in each row

See specs and variations  for Tweezers

Welding Clamp

For protecting the frame during welding

Welding clamp for RGS / RGSC

See specs and variations  for Welding Clamp